CPY 7.2.0 on MAGTAG with ESP32S2 - Adafruit_requests - Session._get_socket fails with OSError -2

[PaulskPt]

CircuitPython version

Adafruit CircuitPython 7.2.0 on 2022-02-24; Adafruit MagTag with ESP32S2

Code/REPL

#
# MagTag date and time circuitpython script
# modified by @Paulskpt
# Version of 2022-02-08
#
# MAGTAG flashed with CircuitPython version:
# Using library files from:
#    a) https://github.com/adafruit/Adafruit_CircuitPython_Bundle/adafruit-circuitpython-bundle-7.x-mpy-20220208.zip and from
#    b) https://github.com/adafruit/Adafruit_CircuitPython_Bundle/adafruit-circuitpython-bundle-py-20220208.zip
# file /lib/adafruit_portalbase/wifi_esp32s2.py modified by @Paulskpt: added 1 import and 5 functions.
#    - Added 'import ipaddress'
#    - The following functions I created in: /lib/adafruit_portalbase/wifi_esp32s2.py.
#      Their contents were originally inside this script (not as functions).
#       - WiFi.get()
#       - WiFi.ping()
#       - WiFi.do_scan()
#       - WiFi.get_mac_address()
#       - WiFi.get_mac_address_ap()

import time
import secrets
from adafruit_magtag.magtag import MagTag
import ipaddress
import gc, os
from adafruit_portalbase.wifi_esp32s2 import WiFi
import wifi
import ssl
import socketpool
import adafruit_requests

my_debug = False

magtag = MagTag()
response = None  # idem
TIME_URL = None
my_wifi = WiFi()  # create an instance of WiFi class
# Get wifi details and more from a secrets.py file
start_clk = time.monotonic()

# Copied from UM's ProS3 code.py
#--------------------------------------------
# Show available memory
print("Memory Info - gc.mem_free()")
print("---------------------------")
print("{} Bytes\n".format(gc.mem_free()))

flash = os.statvfs('/')
flash_size = flash[0] * flash[2]
flash_free = flash[0] * flash[3]
# Show flash size
print("Flash - os.statvfs('/')")
print("---------------------------")
print("Size: {} Bytes\nFree: {} Bytes\n".format(flash_size, flash_free))
#--------------------------------------------

def setup():
    global requests, TIME_URL, my_wifi

    TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
    JSON_QUOTES_URL = "https://www.adafruit.com/api/quotes.php"
    JSON_STARS_URL = "https://api.github.com/repos/adafruit/circuitpython"

    # Get wifi details and more from a secrets.py file
    try:
        from secrets import secrets
    except ImportError:
        print("WiFi secrets are kept in secrets.py, please add them there!")
        raise

    # Get our username, key and desired timezone
    aio_username = secrets["aio_username"]
    aio_key = secrets["aio_key"]
    location = secrets.get("timezone", None)
    TIME_URL = "https://io.adafruit.com/api/v2/%s/integrations/time/strftime?x-aio-key=%s" % (aio_username, aio_key)
    TIME_URL += "&fmt=%25Y-%25m-%25d+%25H%3A%25M%3A%25S.%25L+%25j+%25u+%25z+%25Z"

    print("ESP32-S2 Adafruit IO Time test")

    #my_mac = my_wifi.get_mac_address()
    my_mac = wifi.radio.mac_address
    #ap_mac = my_wifi.get_mac_address_ap()
    ap_mac = wifi.radio.mac_address_ap
    if not my_debug:
        print("My MAC address: \'{:x}:{:x}:{:x}:{:x}:{:x}:{:x}\'".format(my_mac[0],my_mac[1],my_mac[2],my_mac[3],my_mac[4],my_mac[5]), end='\n')
        print("AP MAC address: \'{:x}:{:x}:{:x}:{:x}:{:x}:{:x}\'".format(ap_mac[0],ap_mac[1],ap_mac[2],ap_mac[3],ap_mac[4],ap_mac[5]), end='\n')

    if my_debug:
        print("Available WiFi networks:")
        my_wifi.do_scan()
        print("Connecting to %s"%secrets["ssid"])

    my_wifi.connect(secrets["ssid"], secrets["password"])

    if my_wifi.is_connected:
        print("Connected to %s"%secrets["ssid"])
        print("My IP address is \'{}\'".format(my_wifi.ip_address), end='\n')
        # my_wifi.ping("8.8.8.8")
        if my_debug:
            print("Fetching text from", TIME_URL)
        pool = socketpool.SocketPool(wifi.radio)
        requests = adafruit_requests.Session(pool, ssl.create_default_context())
        #response = my_wifi.get(TIME_URL)
        response = requests.get(TIME_URL)
        if not isinstance(response,  type(None)):
            print("-" * 40)
            print(response.text)
            print("-" * 40)# Escreve o teu código aqui :-)

        height = magtag.graphics.display.height -1
        width  = magtag.graphics.display.width -1
        h0 = height // 6
        hlist = [h0, h0*3, h0*5]

        for _ in range (3):
            magtag.add_text(
                text_position=(
                    10,
                    hlist[_],
                ),
                text_scale=3,
            )
    else:
        print("WiFi not connected!")

def get_pr_dt():
    global my_wifi, response, TIME_URL, magtag

    try:
        response = my_wifi.get(TIME_URL)
    except Exception as e:
        print("get_dt(): error {} occurred.".format(e), end='\n')
        return

    dt = response.text[0:10]
    tm = response.text[11:16] # 23]
    tz = response.text[30:40]
    #s = "time: {}, timzezone: {}".format(tm, tz)
    for _ in range(3):
        if _ == 0:
            magtag.set_text(dt, _, auto_refresh = False)  # Display the date
        elif _ == 1:
            magtag.set_text(tm, _, auto_refresh = False)
        elif _ == 2:
            magtag.set_text(tz, _, auto_refresh = False)
    magtag.display.refresh() # refresh the display


def elapsed(ltrm):
    global start_clk
    diff_clk = time.monotonic() - start_clk
    d = int(float(diff_clk))
    e = "Elapsed: "
    if ltrm == 0:
        return e+"{:d}".format(d)
    if ltrm == 1:
        return e+"{:" ">5d}".format(d)
    elif ltrm == 2:
        return diff_clk

def main():
    global start_clk, requests, response, TIME_URL
    lStart = True
    setup()

    while True:

        #print("{} Seconds".format(elapsed(1))
        if lStart or elapsed(2) > 60:
            lStart = False
            get_pr_dt()  # updatate dt and print
            print(response.text)
            start_clk = time.monotonic()


if __name__ == '__main__':
    main()

Behavior

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.
code.py output:
Memory Info - gc.mem_free()
---------------------------
1996528 Bytes

Flash - os.statvfs('/')
---------------------------
Size: 963072 Bytes
Free: 819712 Bytes

ESP32-S2 Adafruit IO Time test
My MAC address: '7c:df:a1:15:1f:42'
AP MAC address: '7c:df:a1:15:1f:43'
Connected to [<my_router_ssid>]
My IP address is '[<ip-addres-assigned>]'

Traceback (most recent call last):
File "code.py", line 177, in
File "code.py", line 164, in main
File "code.py", line 104, in setup
File "adafruit_requests.py", line 769, in get
File "adafruit_requests.py", line 710, in request
File "adafruit_requests.py", line 554, in _get_socket
OSError: -2

Description

This error started to happen on September 25, 2021. On February 8, 2022, I added this fact in a comment to issue #4394 from @johncblacker. @tannewt advised me to open a new issue. But then, when I commented-out in code.py, calls to my_wifi.ping(<string>), the error vanished. Now, a month later, the script crashed again, this time reporting:
AttributeError: 'WiFi' object has no attribute 'get_mac_address'
get_mac_address is a function I added to adafruit_portalbase.wifi_esp32s2.py, containing code that before was in code.py. To get rid of this error I moved the function back to code.py.
Then I was (again) confronted with the OSError -2.

Additional information

No response

[PaulskPt]

I think I found the problem of the OSError -2. I let the MAGTAG connect to a WiFi extender. I just went to the livingroom where is the router of the ISP. I let the MAGTAG connect to the WiFi AP of that router. It worked! I have to do more investigation why the MAGTAG has problems with the WiFi extender. For the moment I close this issue.

[PaulskPt]

Afterburner: the error AttributeError: 'WiFi' object has no attribute 'get_mac_address' is very probably caused by the fact that the latest version of CircuitPython (5.2.0) has inside a class with the name 'WiFi'. To avoid this AttributeError (and other unwanted errors) I made the following name changes:

a) change folder name '/lib/adafruit_portalbase' into '/lib/adafruit_portalbase_psk';
b) change the filename '/lib/adafruit_portalbase/wifi_esp32s2.py' into '/lib/adafruit_portalbase/wifi_esp32s2_psk';
c) inside the file: '/lib/adafruit_portalbase/wifi_esp32s2_psk' I changed the name of the 'class WiFi' into 'class WiFi_psk';

After these name changes I had 'back' available the functions that I had added to the class 'WiFi'.
I also rebooted the WiFi extender. After this the MAGTAG connected again fine to that WiFi extender.
Problems solved.